lulo

lulo is a terminal-based Linux management and observability tool built around a three-process architecture: a Notcurses frontend, a user/session daemon, and a privileged system daemon.

Components

Component	Role
lulo	Notcurses TUI frontend
lulod	User/session daemon for cached snapshots, focus integration, and frontend IPC
lulod-system	Privileged system daemon for scheduler enforcement and privileged file/apply operations

Feature Areas

Area	What it covers
CPU	CPU history, per-core state, process tree, process signaling
DISK	Mounted filesystem usage dashboard
SCHED	Scheduler profiles, rules, live state, focused/background policy
CGROUPS	Cgroup hierarchy, control files, related config
SYSTEMD	Units, reverse dependencies, config and unit editing
TUNE	Tunables explorer, snapshots, presets, privileged apply
UDEV	Rules, hwdb, live device data, config editing

Docs

Doc	Purpose
INSTALL.md	Build, install, update, and packaging flow
ARCHITECTURE.md	Process split, source layout, IPC, and design rules
CPU.md	CPU sampling and process-tree behavior
DISK.md	Filesystem usage view
SCHED.md	Scheduler model, config layout, and focused-app behavior
CGROUPS.md	Cgroup hierarchy, files, and related config
SYSTEMD.md	Service, dependency, and config inspection
TUNE.md	Tunables explorer, snapshots, and presets
UDEV.md	Udev rules, hwdb, and live device inspection

Build

make PREFIX=/usr

Useful variants:

Target	Purpose
make strict PREFIX=/usr	Build with stricter warnings
make analyze PREFIX=/usr	Static analysis pass
make asan PREFIX=/usr	Sanitizer build

Install

sudo make install PREFIX=/usr
sudo systemctl restart lulod-system.service
systemctl --user restart lulod.service
/usr/bin/lulo -i nc

For full setup, migration, and packaging details, see INSTALL.md.